// JavaScript Document
function $(element){ 
if(arguments.length>1){ 
for(var i=0,length=arguments.length,elements=[];i<length;i++){ 
elements.push($(arguments[i])); 
} 
return elements; 
} 
if(typeof element=="string"){ 
return document.getElementById(element); 
}else{ 
return element; 
} 
} 
var Class={ 
create:function(){ 
return function(){ 
this.initialize.apply(this,arguments); 
} 
} 
} 
Function.prototype.bind=function(object){ 
var method=this; 
return function(){ 
method.apply(object,arguments); 
} 
} 
var Scroll=Class.create(); 
Scroll.prototype={ 
initialize:function(element,height){ 
this.element=$(element); 
this.element.innerHTML+=this.element.innerHTML; 
this.height=height; 
this.maxHeight=this.element.scrollHeight/2; 
this.counter=0; 
this.scroll(); 
this.timer=""; 
this.element.onmouseover=this.stop.bind(this); 
this.element.onmouseout=function(){this.timer=setTimeout(this.scroll.bind(this),1000);}.bind(this); 
}, 
scroll:function(){ 
if(this.element.scrollTop<this.maxHeight){ 
this.element.scrollTop++; 
this.counter++; 
}else{ 
this.element.scrollTop=0; 
this.counter=0; 
} 

if(this.counter<this.height){ 
this.timer=setTimeout(this.scroll.bind(this),20); 
}else{ 
this.counter=0; 
this.timer=setTimeout(this.scroll.bind(this),3000); 
} 
}, 
stop:function(){ 
clearTimeout(this.timer); 
} 
} 
var myscroll=new Scroll("myscroll",20);